powerpc/pseries: lift RTAS limit for hash

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With the previous patch to switch to 64-bit mode after returning from
RTAS and before doing any memory accesses, the RMA limit need not be
clamped to 1GB to avoid RTAS bugs.

Keep the 1GB limit for older firmware (although this is more of a kernel
concern than RTAS), and remove it starting with POWER9.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2017-12-22 21:17:12 +10:00 • committed by Michael Ellerman

parent 5eae82cab5

commit c610d65c0a

1 changed files with 5 additions and 3 deletions

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8

arch/powerpc/mm/hash_utils_64.c

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